Photoelectric selecting system



Oct. 26, 1937. 'K. NAK ANISHI 2,097,234

PHOTOELECTRIC SELECTING'SYSTEM Filed April 5, 193s mar;

relays 5 4 D I ac 44 2 a 202 a/mfps IINVENTORQ Patented @et. 2%, E Q 29%? Nahanishi, Hahata, Macks. .i ap'an, as signer of one-halt tn Kimdira Nahemtshi, Iin-= huoha, Japan .dppiicaticn April a rats, a Bile. eeaatr in Japan April 12, 1932 a on. (or. rare) My invention relates to a system for photo- A'desired number or relays A, B, C, and D are electric selection and has for its object to provide connected to the output circuit of the amplifier. a system for selectively operating a desired elec- The coils of these relays are shown as connected tromagnet of a group of electromagnets through successively in series, but it will be understood 5 the cooperation of a series of relays having sucthat they may be connected in parallel to attain 5 cessively varying current ratings determined in the object of my invention. These relays have accordance with the photoelectric current corsuccessively increasing or decreasing ratings of responding to the difierences in colour or shade operating current, that is to say they are opervalue of objects or parts thereof. ated at successively varying predetermined our- The accompanying drawing illustrates an emrent values by inserting, for instance, difierent 10 ,bodiment of the invention in which the figure resistances in the circuit of each of these relay is a diagrammatic view thereof applied to a coils or by changing the number of turns of the special loom, such as an electric brocade weavcoil, or by varying the weight of the moving parts, ing machine, for illustrating the manner of carrying the tension of the spring 26 and also the photoelectrically selecting colour threads correeifectiveair gap and the like. The relays are 15 spending to a desired design to be woven into provided with armatures 5, 5', 5",, and 5" which cloth. are normally closed on the contacts 5, 6, 6",

Referring in detail to the drawing, in order to 8', and are engageable with the normally open obtain a coloured figure to be'woveu in a cloth contacts 7, l, l and l. The contacts l, l,

a standard picture 5 may be drawn with black l", and 71"" are connected to the succeeding 20 ink of difierent shade values corresponding to armatures 5, 5", and b through leads 8, 8, difierent colours. For example, the standard and 8" respectively. The normally closed conpicture i may be so prepared that the portions tacts 6, 6', d", and 6' and the open contact thereof corresponding to red, violet, .brown, blue 7' of the last relay D are connected respectively and other colours are represented by deepest to one end of the coils' of electromagnets A, 25 black, dull black and successively weaker shade B, C.'., D, and E which are arranged to oper values of black. id and i5 are a light source and ate coloured threads, andthe other ends of these a focusing lens respectively and these elements magnet coils are connected in common to one are arranged to focus the light from the former pole of a battery 9, the other pole of. which lat- ?0 on the standard picture i. 2 is a photoelectric ter is connected with "the armature 5 of the first 3o tube arranged adjacent the standard picture i, relay. The movable armatures it of the electroe a suitable distance therefrom, and the light magnets used for operating coloured threads are reflected from every scanning point on the pic arranged to operate the hooks l2 which lift up ture l is reflected upon the photoelectric tube 2. necessary warps ii to have colour threads woven For this purpose, the standard picture i may be in a cloth. 35

carried on a frame it which is moved back and The operation of the above described arrangeforth along a pair of rails ll by a leading screw ment is as follows:-The points on a horizontal it, and the rails ll are moved to-and-fro on the dotted line it of the original picture i are sucrails l!) by means of a suitable mechanism such cessively scanned by reciprocating the picture it- 40 as a rack 20 and a pinion 2i. 3 represents genself along the line l3 bythe operation of the 40 erally a suitable amplifier for amplifying the leading screw it and the rack 20 and the light photoelectric current produced in the photoelecfrom each point on the picture I is reflected onto tric tube 2. That is, 22 is an amplifying vacthe photoelectric tube 2, the photoelectric curuum valve the input circuit of which is conrent of.the latter varying in accordance with the nected across the terminals of the photoelectric colour value of the point on the picture which is 45 tube 2 through a condenser 23. 24 designates being scanned. Since the current is amplified by high resistances in the input side, while 25 is a. amplifying vacuum valve 22, the current correload resistance connected in the output side of sponding to the colour or shade value of every the amplifying vacuum valve 22. It will be spot on the original picture I flows through the noted that the amplifier 3 used in connection output circuit 4 of the amplifying vacuum valve with the photoelectric tube 2 does not constitute 22. As stated the relays A, B, C, D, are so chosen the main part of this invention, since it is known as to operate at successively larger predeteras disclosed, for an instance in the United States mined current values. Patent No. 1,822,306, and well known by those Assuming that the current intensity correskilled in the art. spondlng to red, for example, operates the relay 55 A only, then the armature 5 is moved to close the contact I so that the circuit including the electromagnet B will be completed through the normally closed contact 6' oil the next relay B. Thus the electro-magnet B will be energized to pull up its armature controlling the red thread which is to be woven in the cloth: At this moment the normally closed contact 6 of the relay A is opened so that no current flows in the circuit including the electromagnet A, thus it does not operate.

Next, if a stronger current corresponding to brown, for example, flows in the output circuit 01' the amplifying vacuum valve 22, the relays A and B will be operated simultaneously so that the armatures 5 and -5' contact with the fixed contacts I and 1' respectively, thereby the circuit 01 the electromagnet C is energized to operate the brown thread. Since in this case the normally closed contacts" 6 and 6' of the relays'A and B are opened no current flows through the circuit including the electromagnets A and B so that these magnets are not operated. As long as the photoelectric current is less than the predecolour of said article may be utilized to selectively termined value, it is obvious that the contact 6 of the first relay A remains closed to maintain the electromagnet A energized so that it is conveniently used to operate the thread ll corresponding to the back-ground of the cloth. The other coloured threads may also be similarly controlled by the relays corresponding to the different current ratings in such a manner that only the relay having the maximum current rating of those operated is effective to operate the electromagnet for a desired colour thread, thus coloured figures corresponding to the original picture I may be automatically woven into the cloth.

If in the above example the electromagnets are arranged to act upon punching rods of a card cutting machine for a Jacquard loom, a card necessary to provide a coloured figure corresponding to the original picture I can be produced automatically and selectively in a manner similar to thatabove described.

What I claim as new and desire to secure by Letters Patent of the United States, is:

1. In a system for photoelectric selection, the combination of means for moving a plurality of articles having different colours in the scanning direction, means for projecting the scanning light on said articles, a photoelectric tube arranged to receive light from said articles, a plurality of relays having successively diilerent current ratings connected in series with each other and in the output circuit of said photoelectric tube, an armature of each of said relays being connected to a normally open contact of the adjacent relay of lower current rating, and a plurality of electromagnets, one terminal of every operating coil of which being connected to a normally closed contact of said relay with the exception that one terminal of the last electromagnet coil,is connected to ya normally open contact 01 the last relay, and the other terminals of all the electromagnet coils Ming connected to one terminal of an electric source, the other terminal of which being connected to the armature oi thecfirst relay so as to connect said electromagnet coils in parallel with each other in the circuit of said electric source, the armature of said electromagnet being associated with an operating mechanism which picks up the desired article so that the photo-- electric current produced corresponding to the operate the electro-magnet corresponding to the relay of maximum ratingat the predetermined photoelectric current by the cooperation of contacts of said relay of lower rating, thereby picking up the armature with the desired article.

2. In a system for photoelectric selection the combination of a standard picture drawn in different depth of basic colour to correspond with colours of objects to be selected according to the quality thereof, means for projecting the scanning light on said standard picture, means for moving said standard picture in the scanning direction, a plurality of relays of diflerent current ratings connected in series with each other and in the output circuit of a photosensitive electrical device which is arranged toreceive the ray reflected from the scanning surface of said standard picture, an armature oi. each of said relays being connected to a normally open contact of the adjacent relay of lower current rating, and a plurality of electromagnets, one terminal of every operating coil of which being connected to a normally closed contact of said relay with the exception that one terminal of the last electromagnet coil is connected to a normally open contact of the last-relay, and the other terminals of all the electromagnet coils beingconnected to one terminal of an electric source, the other terminals of which being connected to the armature of the first relay so as to connect said electromagnet coils in parallel with each other in the circuit of said electric source, the armature of said electromagnet being associated with an operating mechanism which picks up the desired object so that the photoelectric current produced corresponding to the brightness of every scanning part of said standard picture may be utilized to selectively operate the electromagnet corresponding to the relay oi the maximum rating at the prede termined photoelectric current by theco-opera- .tion of contacts of said relays of lower rating, thereby picking up the required object corresponding to the scanning part oi! said standard picture.

3. In a system for photoelectric selection, the combination of a standard picture drawn in difierent depth of basic color to correspond with a colorful design to be put on a cloth, a light projecting means consisting of a light source and a lens for projecting the scanning light on said picture, a photoelectric tube arranged to receive light from every point of said standard picture, means for moving said standard picture to one direction at, the constant speed and cross-wise thereto by one pitch in the plane of said standard picture after the first mentioned movement is over, an amplifier or the photoelectric current connected to the output circuit or said photoelectric tube, a plurality of relays having successively varying current ratings connected in series with each other and in the output circuit of said amplifier, an armature 01' each of said relays being connected to a normally open contact of the adjacent relay of lower current rating, and a plurality of electromagn'ets, one terminal of every operating coil oi. which being connected to a normally closed contact of said relay with the exception that one terminal of the last electromagnet coil is connected to a normally open contact of the last relay, and the other terminals of all the electromagnet coils beingconnected to one terminal of an electric source, the other terminals of which being connected to the armature or the first relay so as to connect said electromagnet coils in parallel with each other in the circuit of said electric source, the armature of said electromagnet having a hook which holds a warp arranged in a brocade loom to be woven into a cloth so that the photoelectric current produced corresponding to the brightness of every scanning point of said'standard picture may be utilized to selectively operate the electromagnet corresponding to the relay of the maximum rating at the predetermined photoelectric current by the cooperation of contacts of said reiavs'of lower rating, thereby picking up the armature. with the required warp to be woven into the clothcorresponding to the seaming point of said standardpicture. J

KINSAKU NAKANISI-II. 

